Lewis Short
(adjective) : mălĕdĭcax (or separately, mălĕ dĭ-cax), ācis, male-dicax
* Foul-mouthed, abusive, slanderous, reviling (ante- and postclass.): maledicax es,Plaut. Curc. 4, 2, 26.
* Subst., a reviler, slanderer, Macr. S. 7, 3 med.
Charlton T. Lewis, Charles Short, A Latin Dictionary